EP 0204081 B1 19890802 - METHOD AND INSTALLATION FOR DOUBLE-STAGE CRUSHING
Title (en)
METHOD AND INSTALLATION FOR DOUBLE-STAGE CRUSHING
Publication
Application
Priority
DE 3520069 A 19850604
Abstract (en)
[origin: US4690335A] A method and apparatus for two-stage crushing of material wherein the material is subjected to crushing first in a constant speed roll mill and then in a second mill. Grit resulting from the crushing is returned to the first mill in a proportion to maintain the filling level of combined fresh material and grit substantially constant even when the quantity of such fresh material changes.
IPC 1-7
IPC 8 full level
B02C 4/02 (2006.01); B02C 4/00 (2006.01); B02C 4/42 (2006.01); B02C 23/12 (2006.01); B02C 25/00 (2006.01)
CPC (source: EP KR US)
B02C 4/00 (2013.01 - KR); B02C 23/12 (2013.01 - EP KR US); B02C 25/00 (2013.01 - EP US)
Designated contracting state (EPC)
BE DE FR GB IT
DOCDB simple family (publication)
EP 0204081 A2 19861210; EP 0204081 A3 19870819; EP 0204081 B1 19890802; BR 8601745 A 19870310; CA 1246518 A 19881213; DE 3520069 A1 19861204; DE 3664731 D1 19890907; ES 555667 A0 19880301; ES 8801881 A1 19880301; IN 166229 B 19900331; JP H0239938 B2 19900907; JP S61278363 A 19861209; KR 870000105 A 19870216; KR 900003784 B1 19900531; US 4690335 A 19870901
DOCDB simple family (application)
EP 86103293 A 19860312; BR 8601745 A 19860417; CA 506626 A 19860414; DE 3520069 A 19850604; DE 3664731 T 19860312; ES 555667 A 19860603; IN 468DE1986 A 19860528; JP 12558886 A 19860530; KR 860003878 A 19860519; KR 860093878 A 19860604; US 83794686 A 19860310